staging:android:ion: Fix whitespace issue

This patch fixes the following whitespace issue:

CHECK: spaces preferred around that '*' (ctx:VxV)
FILE: drivers/staging/android/ion/ion_of.c:91:
+                            sizeof(struct ion_platform_heap)*num_heaps,

Signed-off-by: Yannis Damigos <giannis.damigos@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>